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(No Model.) 3 sheets-sheet 1. G. NITHACK. DRUGGISTS WEIGHING SCALE.

No. 494,685. Patented Apr. 4, 1893.

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No Model.) 3 Sheets-Sheet 2.

G. NITHACK.

DRUGGISTS WBIGHING SCALE. No. 494,685. PatentedApr. 4, 1893.

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(No Model.) 3 Sheets-'Sheet 3. G. NITHAGK. DRUGGISTS WEIGHING SCALE.

Patented Apr. 4, 1893.

UNTED STATES PATENT OFFICE.

GUSTAV NITHACK, OF OBERNIGK, GERMANY.

DRUGGISTS WEIGHING-SCALE.

SPECIFICATION forming part of Letters Patent No. 494,685, dated April 4,1893.

l Application led February 5, 1891. Serial No. 380,349. (No model.)

To @ZZ whom t may concern:

Be it known that I, GUsTAv NITHAOK, a subject of the German Emperor, anda resident of Obernigk, near Breslau, Germany, have invented a new anduseful Improvement in lVeighing-Scales, of which the following is aspecification.

This invention relates to an improved weighing scale, more particularlydesigned for dispensing medicines and for similar purposes.

My improved scale permits the operator to rapidly subdivide a powder orother substance into a number of equally weighing masses, withoutremoving the latter from the scale.

The invention consists in the various features of improvement more fullypointed out in the claims.

In the accompanying drawings: Figure l is a vertical central section ofmyimproved weighing scale. Fig. 2 is a top view thereof. Figs. 3 and 4are corresponding views of a modification; Fig. 5 a detail elevation ofthe post e, shown in Fig. l, with the crown wheel in section; Fig. 6 anelevation of such post at right angles to Fig. 5. Fig. 7 is a top viewof crown wheel f, showing shaft ain section; Fig. 8 a vertical sectionthrough pan fi, and Fig. 9 a section at right angles to Fig. 8.

The letter ct, represents a post, free to turn in a hollow foot b, inwhich it has its bearings at the top and bottom. To the post o, there iskeyed a bevel wheel c, that intergears with bevel wheel CZ. The wheelCZ, is secured to a shaft g, carrying a button c. By revolving thisbutton, the wheel CZ, is revolved, to revolve in turn, the wheel c, andthe post a. To the upper side of foot h, there is secured a crownwheelf, (Fig. 7) having beveled upwardly projecting teeth. These teethare engaged by the lower arm h, of an elbow lever, pivoted to post d.The upper arm Z, of this lever is placed directly under one arm of thescale beam rrn, pivotally supported by the post a. This scale beamcarries at one end, the weight-carrying pan or weight m', and at theother end a pan fr', and counterweight e". When a depression on thecrown wheel f, is in line with the elbowlever, the latter swings down byits own gravity and the upper arm Z, does not interfere with the play ofthe scale beam. But when a raised part of the wheel comes beneath theelbow lever, the latter will be pushed upward and the arm Z, will holdthe scale beam in a tilted position, such as shown in Fig. 3.

If the wheel f, is provided with say twenty, equally distanced teeth,each partial turn of the button e, will cause the post d, and with itthe scale beam, to revolve over the twentieth part of a circle and willalso cause such scale beam to be locked and unlocked.

'To the frame A, of the scale, there is secured a top plate 7o, made ofcircular, semicircular or other form. This plate has a series'ofopenings n, placed at a uniform distance apart and correspondingin aradial position, to the position of the teeth on the crown wheel F.--Inuse, there is placed upon the openingen, a number of wrappers o, thatare to contain the matter to be weighed off. These wrappers aresupported by the plate k, directly over the openings n., and as manywrappers are put in place as there are powders, rbc., to be weighed 0E.

At the beginning of the operation, the weight m', will throw the pan i,up and out of one opening n, to raise the wrapper o, clear off the plaie7c. This wrapper is now filled, until the weight m', is counterbalanced,when the pan t', will descend and will place the wrapper o, upon theplate 7o. A turn on button e, will now revolve crown wheel f, to holdthe weighted arm of the scale beam up and to revolve the beam until thepan t, has arrived beneath the next opening n, when the elbow leverdescends and the scale beam is liberated so that the pan i, will raisethe wrapper o, over such opening. In this way, the wrappers o, may belled in quick succession with accurately weighed quantities of thepowder.

It is evident that the operation of the device would be the same, if thescale beam were fixed, andthe plate k, were made to revolve. Thismodification is illustrated in Figs. 3 and 4. In these figures the platek, is, by uprights 7a', secured to a disk k2, free to turn on frame A.The bevel wheel c, is not secured to the posta, but is secured to thedisk 7.52, so as to revolve the same, when the button c, is turned. Therevolution of the bevel wheel c, will cause a corresponding IOOrevolution of the plate la, and thus the openings n, of such plate, aresuccessively brought over the pan t', of the scale beam. The weighingoperation is the same as described in relation to Figs. l and 2.

If desired a drawer A', may be provided, for containing the Wrappers orweights.

In lieu of having the revolving motion described, the plate k, or thescale beam may be made to move in a longitudinal direction. Theprinciple ot' causing the pan i, to come into line successively with oneopening n, after the other of the wrapper-carrying plate, remains thesame.

The advantages connected with my scales are numerous. A great saving oftime is effected, accuracy and cleanliness is obtained and themanipulation is facilitated. Ot course, the scale may be also builtsufficiently heavy, to be used for merchandise generally.

1. The combination of a perforated plate with a scale beam beneath suchplate, and a pan t' on the scale beam adapted to be projectedsuccessively through the perforations of the plate, substantially asspecified.

2. The combination of a perforated plate with a scale beam beneath suchyplate, a lever controlling the scale beam and a crown Wheel engaging thelever, substantially as specified.

3. The combination of a perforated plate with a horizontally rotatablescale beam beneath such plate, alever controlling the scale v beam, acrown wheel engaging the lever, and

with a pan carried by the scale beam and adapted to be projected throughthe perforation of the plate,substantially as specified.

' GUSTAV NITHACK.

Nitnessesz WILLIAM H. MUSSELMAN, BERTHA MLLER.

